/*
 * Copyright (c) 2023 Huawei Device Co., Ltd.
 * Licensed under the Apache License,Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 * http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */

import hilog from '@ohos.hilog';
import worker, { ThreadWorkerGlobalScope, MessageEvents, ErrorEvent } from '@ohos.worker';
import { adjustSaturation } from '../utils/AdjustUtil';

let workerPort: ThreadWorkerGlobalScope = worker.workerPort;

/**
 * Defines the event handler to be called when the worker thread receives a message sent by the host thread.
 * The event handler is executed in the worker thread.
 *
 * @param e message data
 */
workerPort.onmessage = function (event: MessageEvents) {
  let bufferArray = event.data.buf;
  let last = event.data.last;
  let cur = event.data.cur;
  let buffer = adjustSaturation(bufferArray, last, cur)
  workerPort.postMessage(buffer);
  workerPort.close();
}

/**
 * Defines the event handler to be called when the worker receives a message that cannot be deserialized.
 * The event handler is executed in the worker thread.
 *
 * @param e message data
 */
workerPort.onmessageerror = function (event: MessageEvents) {
  hilog.error(0x0000, 'AdjustSaturationWork', 'Failed to load the content. Cause: %{public}s', `on message error ${JSON.stringify(event)}`);
}

/**
 * Defines the event handler to be called when an exception occurs during worker execution.
 * The event handler is executed in the worker thread.
 *
 * @param e error message
 */
workerPort.onerror = function (error: ErrorEvent) {
  hilog.error(0x0000, 'AdjustSaturationWork', 'Failed to load the content. Cause: %{public}s', `on worker error ${JSON.stringify(error)}`);
}